Coffee maker



FIG. 1 is a front perspective view of a coffee maker according to our design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a back elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The portions of the coffee maker shown in evenly-spaced broken line form no part of the claimed design.

Dash-dot broken lines adjacent un-shaded areas form no part of the claimed design and represent bounds of the claimed design. 

CLAIM The ornamental design for a coffee maker, as shown and described. 